Paper-feeding device for wrapping-machines.



D. T. & D. C. IGOU.

PAPER FEEDING DEVICE FOR WRAPPING MACHINES. APPLICATION FILED MAY 4.1915.

1., 173 276., Patented Feb. 29, 1916.

D. T. & D. C. IG'OU.

PAPER FEEDING DEVICE FOR WRAPPING MACHINES.

APPLICATION FILED MAY 4, I9I5.

Patented Feb. 29, 1916.

5 SHEETSSHEET 2- 0. T. & n. 0. IGOU. PAPER FEEDING DEVICE FOR WRAPPINGMACHINES.

m v. I APPLICATION FILED MAY 4,19I5. L1 13 2"? Patented Feb. 29,1916 I VD. T. & D. C. IGOU.

PAPER FEEDING DEVICE FOR WRAPPING MACHINES. APPLICATION FILED MAY 4,1915.

1,178,276.. Patented Feb.29,1916.

5 SHEETS-SHEET 4.

D. T. & D. C. IGOU. PAPER FEEDING DEVICE FOR WRAPPING MACHINES.

7 APPLICATION FILED MAY 4, 1915. 1,173,276. Patented Feb. 29,1916.

5 SHEETSSHEET 5- DENNIS '1. IGOU AND DALE C. IGOU, OF SPRINGFIELD, OHIO,ASSIGNORS TO THE IGOU HUFACTURING COMPANY, OF SPRINGFIELD, OHIO, ACORPORATION OF OHIO.

PAPER-FEEDING DEVICE FOR WRAPPING-MACHINES.

Original application 'flied September 19,

To all whom it may concern:

Be it 'known that we, DENNIS '1. Icon and DALE 0. Icon, citizens of theUnited States, residing at Springfield, in the county of Clark and Stateof Ohio, have invented certain new and useful Improvements in Paper-Feeding Devices for Wrapping-Machines, of which the following is aspecification.

This invention relates to improvements in machines for wrapping candyand more particularly to that part of the machine which feeds the paperWrappers to a position to receive the confections; this applicationbeing adivision of our pending application Ser. No. 582,671, filedSeptember 19, 1910.

The object of the invention is to provide a mechanism of the characterreferred to, which will be simple in construction and efiective inoperation.

V In the accompanying drawings :Figure 1 is atop plan View of so much ofthe machine employing our improved devices as is necessary to illustratethe operation of the same, and a portion of the same being broken away.Fig. 2 is a top plan view of the feeding and cutting mechanism. Fig. 3

' is a vertical sectional view taken on the line '3-3 of Fig. 2. Fig.4.: is a transverse sectional view taken on the line 44 of Fig. 2 andlooking in the direction of the arrows. Fig. 5 is a vertical sectiontaken on the line 5-5 of Fig. 1, some of the parts, however,

being omitted. Fig. 6 is a top plan view of mechanism. Fig. 11 is abottom plan view of the cam shown in Fig. 11 and its supportingstandard, the cam being shown in its normal position. Fig. 12 is adetail view of the paper gripping jaws in their open position. Fig. 13is a similar view showing the jaws in their closed position. Fig. 14 isa sectional detail view taken on the line 14-14 of Fig. 12.

Specification of Letters Patent.

Patented Feb. 29, 1916i.

1910, Serial No. 582,671. Divided and this application filed May 1,1915. Serial No. 25,698.

which deposits them on the wrappers, which wrappers have been fed to thewrapping mechanism D by the devices which form the sub ect matter ofthis application and which will now be described; the wrapping mechanismin itself forming no part of these devices and being described morefully in our pending application, Ser. No. 582,671.

These devices comprise a frame consisting of two parallel side members 1between which are mounted two shafts 2 and 3. The lower shaft 2 isjournaled in the body of the side walls of the frame, while the uppershaft is journaled in upwardly extending arms 4 rigidly secured to theseside walls. The shafts are preferably arranged in substantially the samevertical plane and each has mounted thereon a feed roller.

The web of paper from which the wrappers are to be formed is carriedfrom the roll, which is supported beneath the frame, upward and over theguide roller 5 supported by arms 6 forming a part of the frame members 1and is presented to the feed rollers in a substantially horizontalplane. In the form shown each feed roller comprises a series of frictiondisks 7, there being, in the present instance, four of such disks oneach shaft. Each disk has a series of recesses or cut away portions 8formed therein at equal distances about the periphery thereof. Thoseportions of the disk lying between the recesses 8 constitute feedingprojections 9 and the corresponding disks on the two shafts are mountedin substantially the same vertical planes and are so arranged that thefeeding projections of the disks will grip the paper between them andfeed the same forward so long as-they are in engagement therewith. Theprojections will release the paper before the succeeding pair ofprojections will grip the same. Consequently, there is an interval whenthe paper is not acted upon by that particular pairof disks. The seriesof disks on each shaft are arranged alternately, i. 0.. the feedingprojections on one disk are in the same radial planes as the recesses ofthe adjacent disk. Consequently, the disks of one pair will grip thepaper at the. instant it is released by the disk of another pair. Inthis manner the paper is fed forward continuously, but the points ofcontact of the feeding disks or rollers with the paper are constantlychanging and furthermore are narrow and widely separated. By reason ofthis arrangement whereby the paper is alternately gripped and releasedby the several pairs of disks, the paper will tend of its own accord toreturn to its true course should it have been slightly divertedtherefrom.

To accomplish the return of the paper'to its normal path in a positivemanner, should it be diverted therefrom, we have arranged a pair ofgripping devices in a positibn to engage the web of paper after itpasses the feeding rollers and to move the same at a slightly higherspeed than it is moved by the feeding rollers, thereby exerting a pullon that portion of the web which lies between the feeding rollers andthe gripping devices and tending to draw the web of paper into astraight line. These gripping devices, as here shown, comprise a roller10 mounted on a shaft 11 journaled in the side members 1 of the frame.Arranged immediately above the roller 10 is a bar 12 arranged parallelwith the roller and extending at right-angles to the path of the web ofpaper. This bar is provided at its opposite ends with trunnions 13 and14, which are journaled in the frame members 1. The trunnion 13 is ofordinary construction and is rigidly secured to a disk or flange 15,which, in turn, is rigidly secured to the end of the bar 12, these partsbeing preferably formed integral. The trunnion 14 is hollow and extendsfor some distance beyond the side of the frame member 1 in the form of asleeve "16 and has slidably mounted therein a plunger 17 which is heldnormally in its innermost position by means of a spring 18 confinedbetween the plunger and the closure for the end of the sleeve, which, inthe present instance, comprises a screw-threaded plug 19. The bar 12 hasa suitable friction member arranged along one edge thereof and adaptedto engage the paper on the roller 10 and exert a gripping actionthereof. This friction memher, in the present instance, consists of astrip of rigid material 20, slidably mounted in the bar 12 and having apiece of leather or other suitable material inserted in the lower edgethereof, as indicated at 21.

Springs 22 arranged in recesses 23 in the bar 12 bear against the inneredge of the strip 20 and tend to move the strip outwardly.

The feeding rollers and the grippingde' vices may be actuated in anysuitable manner. shaft 3 of the feeding rollers has mounted on one endthereof a bevel gear 24 which meshes with a corresponding gear 25secured to the upper end of 'a shaft 26 which extends downward throughthe top l of the main frame and has on its lower end a bevel pinion 27meshing with a bevel pinion 28 carried by a shaft 29 arrangedlongitudinally of the frame and supported in bearings carried by theframe. The rear end of this shaft has a bevel gear 31 meshing with abevel gear 32 on a main driving shaft 33. The bevel gear 31 ispreferably loosely connected to that shaft by suitable clutch mechanism.In the present instance the bevel gear 31 is rigidly secured to a sleeve3i into which the adjacent end of the shaft 29 pro jects. One end of.the sleeve 3% forms a clutch member adapted to cooperate with a secondclutch member 35 slidably Inounted on' the shaft 29 and held againstrotation relative thereto. The clutch member 35 has an annular groove 36adapted to receive a pin 37 carried by a lever 38 which is pivotallvmounted on the under side of the top 1 of the main frame at 39 andextends bevond the side of the main frame to form a handle by means ofwhich the clutch mechanism may be actuated to control the rotation ofthe shaft 29, and thereby start or stop the paper feeding mechanism.

In the present instance the upper The shaft 3 also has rigidly securedthereto a gear 10 which meshes with a corresponding gear 41 secured tothe lower shaft 2. thereby causing the two shafts and the feedingrollers carried thereby to be rotated in opposite directions. The lowershaft 2 has a gear 42 eccentrically mounted on the end thereof oppositethe gear 41 and this eccentrically mounted gear meshes with a secondeccentrically mounted gear 13 carried by a shaft 4 1 journaled in theside members 1 and having on its opposite end a gear 15, which gearmeshes with a gear 46 on the shaft 11 of the roller 10, and this gear,in turn, meshes with a gear 47 which is mounted on and rigidly securedto the sleeve-like trunnion 11 of the rotatable bar 12. The eccentricgears +12 and 13 are so arranged that the shaft +1 will move slowlyduring a portion of its rotation and during another portion of itsrotation will move at a higher rate of speed. The gears are so arrangedthat the speed of the shaft 41, and, consequently, of the roller 10 andbar 12, is increased at the time of their contact with the paper andthis increased speed is greater than the speed of the feeding rollers.Consequently, the paper between the mea re ta feeding rollers, and. thebar will be drawn taut, and, inasmuch as the bar 12 and roller 10 are atright angles to the line of movement of'the paper, the tendency will .beto correct any variation of the web of paper from its true course oftravel, this being while the paper is stretched taut. To this end theblade is provided with inclined slots 49 through which extend pins orbolts 50 carried by the bar 12. The trunnion 14 which supports one endof the bar 12 has an opening 51 therein to receive the adjacent end ofthe blade 48 and permit the same to be engaged by the spring-pressedplunger 17, which plunger tends to move the blade longitudinally of thebar 12, and, owing to the inclination of the slots 49, its movement isalso a downward movement. The movement of the blade is limited by a camplate 52 which is secured to that frame .ger 17. This cam plate is inthe form of a metallic ring surrounding the trunnion 13 with and has itstwo extremes of thickness arranged adjacent' one to the other at thelowermost point of movement of the bar; this ring having a centralopening 52 and being split radially at that point where the high and lowparts thereof meet, as indicated at 52 (Fig. 11).

The cam plate is engaged by a projection 53 extending from the adjacentend of the blade 48. As the bar 12 revolves the blade 48 will be movedlaterally against the pressure of the spring-pressed plunger 17 untilthe bar and the blade reach the lowermost point of their movement whenthe projection 53 will pass off the end of the cam plate and the plungerwill move the blade transversely and downwardly into engagement with thepaper; the radial slit in the cam permitting the low part thereof tospring slightly as this operation takes place so as to obviate shock andjar on the parts; the cam being so formed that the lower part thereofwill stand a suitable distance away from the support 1 to permit thisyielding movement. At the time of the operation of the blade 48 thepaper is held by the friction member 20 and roller and has been drawntaut over a slot 54 formed in the roller 10 and so arranged as to be inthe line of moveand this combined with the stretching of the paper overthe slot 54 causes the paper to be" severed with a smooth clean cut. Theaction of the friction-member and the roller 10 also serves to preventthe paper from adhering to the blade and thus having its forwardmovement interfered with. The severed sheet of paper is delivered by thefriction member and roller upon a supporting plate 55 having near onecorner thereof a slot 56 above which the edge of the paper extends. A'finger 57 acts as a guide to prevent the paper curling up or blowing edthe table.

A pair of gripping jaws, mounted to move transversely to the machine asa whole, grip the sheet of paper while it is on the supporting plate 55and transfer the same to the wrapping mechanism. These gripping jawscomprise an upper jaw 58 rigidly secured to a slide bar 59 and a lowerjaw 60 pivotally mounted on that slide bar. The movable jaw 60 isconnected to the fixed jaw bysuitable friction devices which, in thepresent instance, comprise a pivot pin 61, smooth throughout its lengthand extending through the two jaws. A spring plate 62 has one endextending about the end of the pivot pin 61 and bearing against a washer63. The opposite end of the plate is curved inward toward the slide bar59 and is held'in position by a screw 64. By tightening down this screwthe end of the plate which surrounds the pivot may be caused to exertthe desired amount of pressure on the washer 63 and on the jaw 60. Inthis manner sufficient friction is exerted on the movable jaw 60 to holdthe same against movement by gravity. The movement of the lower jaw isaccomplished by means of a projection or lug 65 extending upwardlytherefrom and preferably at a point immediately above its pivotalcenter. As the jaws move forwardly, z. e.,' toward the sheet of paper onthe supporting plate 55, they are in their open position and receive theedge of the paper betweenthem. As the jaws approach the limit of theirforward movement a stop, such as a finger 66 rigidly secured to one ofthe side members 1 ing it to grip the paper between itself and the upperjaw. The frictional resistance to the movement of the lower jaw retainsit in its gripping position as the slide bar carrying'the jaws isretracted. As the jaws approach their rearmost position, in whichposition the sheet of paper or wrapper rests upon the wrapping mechanismin the proper position to receive the confection, the lug 65 will beengaged by a stop or finger 67 carried by the bracket 68 rigidly securedto the top 1 of the main frame? This stop or finger moves the lower jawabout its pivotal center and releases the sheet of paper or wrappertherefrom.

In order that the gripping action of the jaws may be increased and thata slight separating of the jaws may not release the paper the jaws areprovided with resilient contact members. In the form here "shown themovable jaw has mounted therein a series of soft rubber plugs, the endsof which extend beyond the face of jaw. When the jaw is moved into itsclosed position the resilient members engage the paper,

. are compressed between the jaws and exert a strong gripping action onthe paper. If the jaws should separate slightly from any cause thesemembers will expand and still press the paper against the fixed jaw,thereby preventing it from escaping from between the jaws as wouldfollowif the gripping faces were not yieldable. The move- '\ment ofthese jaws may be accomplished ,in any suitable manner. In the presentinstance the slide bar 59 is mounted in a guideway 69 formed in thebracket 68. A

pitman 70 is pivotally connected at one end to the slide bar and at itsother end to a crank arm 71 secured to one end of a shaft 72 journaledin horizontal bearings 73 carried by a bracket 'T-L mounted on the top 1of the main frame. This shaft has secured thereto a. bevel pinion 75meshing with av corresponding pinion 76 secured to the upper end of avertical shaft 77 which is mounted in'a bearing 78 carried by the top 1of the main frame and has its lower end extending beneath the top of theframe and 5 provided with a bevel pinion 79 meshing with a beveled gear80 on the shaft 81, which shaft is driven from the main driving shaft 33through the medium of the beveled gears 82 and 83. Supporting fingers 84and 85 extend from the bracket 68 and the plate 55, respectively, topoints near the wrapping mechanism and serve to support the outer edgesof the wrapper when it is in position upon said mechanism.

Having thus described our invention, we claim:

1. In a machine of the character described, a wrapper-forming devicecomprising paper feeding rollers, gripping devices arranged beyond saidpaper feeding rollers, means for actuating said paper gripping devices,while they are in engagement with said paper being fed by said feedingrollers, at a greater rate of speed than said feeding rollers areactuated, and a cutter arranged to engage the paper between said paperfeeding rollers and said gripping devices.

2. In a machine of the character described, a wrapper-forming devicecomprising a pair of feeding rollers, each having a series of disksspaced apart thereon and arranged in sets, the corresponding disks' onthe two rollers being arranged to cooperate one with the other, saiddisks having paper-engaging surfaces spaced about the periphery thereof,one set of disks alternating with the other set in gripping andreleasing the paper, paper gripping devices arranged beyond said feedingrollers and comprising-a roller, and a rotatable bar having a frictionmember arranged at one edge thereof and adapted to engage the paperwhile it is in engagement with said roller, and means for acceleratingthe speed of said gripping devices.

of disks alternating with the other set in gripping and releasing thepaper, paper gripping devices arranged beyond said feeding rollers andcomprising a roller, a rotatable bar having a friction member arrangedat one edge thereof and adapted to engage the paper while it is inengagement with said roller, means for accelerating the speed of saidgripping devices, and a cutter carried by'said bar and adapted to engagethe paper in the rear of the friction member.

4. In a machine of the character described, a wrapper-forming devicecomprising a pair of feed rollers, each of said rollers consisting of aplurality of disks arranged in sets, each disk having a series ofprojections spaced .about the periphery thereof, one set of disks oneach roller cooperating with the corresponding set of disks on the otherroller and alternating with the other corresponding sets of disks onsaid rollers in gripping and releasing the wrappers. I

5. In a machine of the character described, a wrapper-forming devicecomprising a pair of feed rollers, each of said rollers consisting of aplurality of disks arranged in sets, each disk having a series ofprojections spaced about the periphery thereof, one set of disksalternating with the other set in gripping and releasing the wrappers,gripping devices arranged beyond said feeding rollers and comprising aroller, a rotatable bar arranged parallel with said roller and having afixed member secured to one edge thereof, and eccentrically mountedgears for rotating said roller and said rotatable bar.

6. In a machine of the character described, a Wrapper-forming devicecomprising a pair of feed rollers, each of said rollers consisting of aplurality of disks, arranged in sets, each disk having a series ofprojections spaced about the periphery thereof,

awaere one set of disks alternating with the other set in gripping andreleasing, gripping devices arranged beyond saidfeeding rollers andcomprising a roller, a rotatable bar arranged parallel with said rollerandhaving a fixed member secured to one edge thereof, eccentricallymounted gears for rotating said roller and said rotatable bar, a'knifemovably mounted on said rotatable bar, and means controlled by therotation of said bar for actuating said knife.

7. In a machine of the character described, a wrapper-forming devicecomprising a pair of feeding rollers, gripping devices arranged beyondsaid feeding rollers and comprising a roller having a longitudinal slottherein, a bar rotatably mounted above said roller and having a frictionmember secured to one edge thereof, a hollow trunnion secured to oneendof said bar, a blade slidably mounted on said rotatable bar andadapted to move diagonally thereto, a spring-pressed plunger mounted insaid hollow trunnion adapted to engage one end of said blade, and a camplate arranged to engage the opposite edge of said blade and. move thesame diagonally to said bar and against the action of said springpressedplunger.

8. In a machine of the character described, a wrapper-formingdevicecomprising a pair of feeding rollers, gripping devices arranged beyondsaid feeding rollers and comprising a roller having a longitudinal slottherein, a bar rotatably mounted above said roller and having a frictionmember secured to one edge thereof, a hollow trunnion secured to one endof said bar, a blade slidably mounted on said rotatable bar and adaptedto move diagonally thereto, and a spring-pressed plunger mounted on'saidhollow trunnion and adapted to en gage one end of said blade, a camplate arranged to engage the opposite edge of said blade and move thesame diagonally to said bar and against the action of said springpressedplunger, and resilient means for cushioning said blade as it rides offthe high part of said cam plate.

9. In, a machine of the character described, a pair of gripping jawscomprising a fixed jaw, a movable jaw, friction means for retaining saidmovable jaw in its adjusted position relative to the fixed jaw, a partcarried by said movable jaw,

and stops secured to fixed parts of said machine to engage the partcarried by said movable jaw and move said jaw vinto its open and closedpositions, respectively.

10. In a machine of the character described, a bracket having aguideway, a slide bar mounted in said guideway, means for causing saidslide bar to reciprocate in said guideway, a jaw rigidly secured to oneend of said slide bar, a second jaw pivotally mounted on said slide barand adapted to coiiperate with the fixed jaw, a lug secured to saidpivoted jaw, and fingers secured to fixed parts of said machine near theopposite limits of movement of said jawsgalud adapted to engage said lugto move said pivoted jaw into its open and closed positions,respectively. I

11. In a machine of the character described, a bracket having aguideway, :a slide bar mounted in said guide-way, means a for causingsaid slide bar to reciprocate in said guideway, a jaw rigidly secured toone end of said slide bar, a second jaw pivotally mounted on said slidebar and adapted to cooperate with the fixed jaw, a spring plateadjustably secured to said slide bar and having one end bearing againstsaid pivoted jaw to exert a frictional resistance to the movementthereof, :1 lug secured to said piv-.

oted jaw, and fingers secure to fixed parts. of said machine near theopposite limits of movement of said jaws and adapted to engage said lugtomove said pivoted jaw into its open and closed positions respectively.

12.. In a machine of the character described, a paper feeding mechanismcomprising feeding devices, a rotatable spring-' while in engagementwith the paper at a greater rate of speed than said feeding rollers areactuated and before the severing op.- eration by said cutter.

14:. In a machine of the character described, a wrapper forming devicecomprising paper feeding rollers, a cutter for severing the paper,gripping devices arranged beyond said rollers, means for actuating saidgripping devices while in engagement with the paper at a greater rate ofspeed than said feeding rollers are actuated, and means for operatingsaid cutting mechanism after the beginning of and during the grippingaction of said gripping devices.

15. In a machine of the character described, a wrapper forming devicecomprising paper feeding rollers, a cutter for severing the paper,gripping device's arranged beyond sa1d paper feeding rollers comprisinga roller and revoluble bar cooperating therewith to engage the paper ateach revowe together with means for actuating the same 11c lit a lutionof the same, means for operating said In testimony whereof, We havehereunto bar and roller at a greatelr speed than that set our hands this24th day of April, 1915. of said feedin rollers wiile the same are inengagement with said paper, and means 6 for operating said cutter afterthe beginning of and during the gripping action Of said Witness:gripping devices. CHAS. I. VELCH.

